// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Package fillcontext implements a mechanism to fill contexts.
package fillcontext

import "context"

// Filler extends the context.
type Filler func(context.Context) context.Context

// Noop is a filler that does nothing.
func Noop(ctx context.Context) context.Context {
	return ctx
}
